Box-pressing machine



M. R. KONDOLF.

BOX PHESSING MACHINE.

APPLICATION FILED MAY 9, 1921.

1 422,58, Patented July 11,1922,

3 SHEE[SSHEET l.

M. R. KO'NDOLFQ BOX PRESSING MACHINE. APPLICATION FILED MAY 9. 1921.

Patented July 11, 1922, I

3 SHEETS-SHEET 3.

" 2:9 fig 10 9 3 .9

Ui llTED STATEE PATENT QFFEQE.

MATHIAS R. KONDOLF, OF PHILADELPHIA, PENNSYLVANIA.

BOX-.PRESSING- MACHINE.

=A pplieation filed May 9,

tor, a reciprocating male die or form provided with relatively movablesections adapted to press a box or for-m in the female die, andpneumatic means for operatmgjthe male die and ejector in synchronousrel-at1on,=these features having cooperating details of improvedcharacter hereinafter disclosed In the accompanying drawings, Fig. 1 isa front elevation of a machine embodying the invention; Fig. 2 is abroken vertical sectional view of the same; 3 is a sec tional view takenon the line 3-3 of Fig. 2 with the male die in its elevated position inthe female die; Fig. 1 is a sectional view taken on the line P- 1 ofFig. '2 with the mechanism in the lowered position of the male die; Fig.5 is a broken plan "view of a detail. of construction taken on the line5*-5 of Fig. 2, and Fig. 6 is a sectional view taken on the line (i -6of Fig. 5.

The machine shown, by way of illustrat- .ing a form of my invention,comprises a base 1 having fixed thereto and supported thereby thevertical cylinder 2 and the rods 3, the cylinder having the members 1and 5 extending oppositely therefrom to terminations in the respectivecollars 6 and 7 fixed on the rods, whereby the several parts are bracedrelatively.

A head 8 is provided with the oppositely disposed collars 9, which areengaged on the rods 3 by the nuts 10 and 11, whereby the position of thehead is adjustable.

A cylinder 12 is fixed to and rises from the head 8. and a rectangularfemale form or die 13 is fixed to and extends downwardly from this head,the sides of the die having their lower inner edges beveled.

A piston 1 1, which acts in the cylinder 12, is connected by arod 15,acting through the head 8, with an ejector 16 which acts in the die 13.

A piston 17, which acts in the cylinder 2,

reciprocates its rod 18 through. the cylinder Specification of LettersPatent.

Patented July 11,

1921. Serial No. 468,132.

head 19, thereby elevatingand lowering the bearing 20 carried on thereduced upper end of the rod.

Coiled springs 21 are carried by the bearing 20, on opposite sides ofthe rod 18, and

are held in place by the bolts 22 which extend through the bearings.These springs 21 support a table or hearing plate 23 which is thrustupwardly thereby upon'the upward movement of the bearing 20.

The table 23, of generally rectangular form as shown. has fixed, in theends thereof, the bifurcated bearings 24, which carry the horizontalpintles 25 disposed parallel to the table ends. Collars 26, adapted tomove freely on the rods 3, are provided with lugs 27 engaged flexiblybetween the bifur-' cations of the bearings 24 by the pint los '25, oneof the lugs making a free engagement with the corresponding pintle,whereby the table 23 is permitted a limited universal adjustment.

A male die or form is carried by the table 23 and comprises therectangular head 28 together with the movable angular sections 29,similar to and adapted to enter the form 13. The die head 28, is fixedto the table 23 by the struts and isengaged by the blocks 31 fixed tothe inner faces of the sections 29 to guide and hold the latter in thedesired relation to the head and table. The die sections 29, having thealigned vertical surfaces 29 forming sides at right angles to thealigned vertical end surfaces 29, are supported by and movable on thetable 23, to apply final pressure to the sides. ends and corners of thebox after it has been carried by the rising head 28 into the form 13 andagainst the ejector 16 in the elevated position thereof.

The sections 29 are reciproca'ted on the table 23 (in the generaldirection of the diagonals of the form but with freedom for ad justment)by the differential movement of the bearing 20 relatively to the table23, due to the compression and expansion in the springs 21, and by theaction of the piston rod 18 through its extension 32, the yoke 33carried thereby and the toggle links or bolts 3 hinged to the collar andto the sections.

The extension 32 on the rod 18 is provided with the bearing 35, on whichthe yoke 3-3 is movable, and with the hub 36 extending freely throughthe yoke and on which the latter is movable. A cup shaped bearing 37 ismounted. on the hub in position to hold the v e ector -16.

yoke in place thereon and a bolt 38 extends through this bearing and theextension 32 into the top of the rod 18, to fix these parts together indetachable relation.

The yoke 33is provided with the bifur cated bearings 39; pintles 40 areengaged freely in the respective bearings; the links 34 extend throughthe respective pintles between the corresponding bifurcations where theyare fixed by the nuts 41 and 42, and pins 43 fixed in the corners of therespective sections 29 parallel to the respective pintles' 40 extendfreely through and provide bearings for eyes 44 which are adjustable byscrew engagements on the links 34; the pintles and eyes being permitteda rocking and lateral movement with relation to their bearings forreciprocating the sections 29 while permitting their limited universalmovements and automatic adjustment to the materials under pressure.

Motive fluid is supplied for the operation of the respective pistons 17and 14 to operate the male die and the ejector, by a conduit 45 having abranch conduit 46 connected with the bottom of the cylinder 2, undercontrol of a three way valve 47, and a branch conduit 48 connected withthe top of the cylinder 12, under control of a three way valve 49.

The valve 47, which can be set to connect the cylinder 2 with theconduit '45 or the atmosphere, is operated by a rod 50 which extendsupwardly through and is journalled in a segmental bracket 51 fixed tothe head 8. The rod 50 is turned by its arm 52, which is movable overthe bracket by a handle adapted to engage the notches 54 and 55 of thebracket, to hold the valve in position for supplying motive fluid to thecylinder 2 and to exhaust thesame to the atmosphere.

the handle being disengaged from the bracket by drawing the former downagainst the action of the spring 56 supported therein by the bolt 57fixed to the arm.

The yalve 49, adapted to be set to connect the cyllnder 12 with theconduit 45 or the atmosphere, is operated by a lever 58, whichisnormally held in the elevated position by a spring 59 connectedtherewith and with the head 8, the valve being thus held in positionfor-cutting the cylinder 12 off from the conduit 45 and connecting itwith the atmos' phere. A pawl 60 is pivoted to the leve 58, 1n the pathof the table 23', and rises to permit the table to pass it in movingupward, a lug 604 on the pawl locking it to the lever 58 in the reversemovement. In descending, the

engagement of the table with the pawldepresses the lever 58 against theaction of the spr1ng59, and operates the valve 49 to admit- -motivefluid to the cylinder 12, thereby forcing down .the

piston 14 together with the Itf will be understood from the foregoingdescription that, 111 the operation of the mathe article out of thefemale die.

ward movement and having the bottom of the article pressed against bythe male die head 28. The male die 1S thereby held against furtherupward movement, but the piston together with its rod are permitted afurther upward movement by the compression of the springs 21, and theyoke 33 caused to act through the bolts or toggles 34 upon the angularsections 29, thrusting them from'their inner positions toward therespective corners of thefemale die, thereby pressing the sides orsides, and ends as Well as the corners of the article. As the male diesec tions have a limited universal movement, permitting them to adjusttheir positions to accommodation with the box walls, the latter receivea substantially uniform pressure. The pressing operation having beeneffected, the valve'47 is operated to release the motive fluid in thecylinder 2, the piston 17 together with the parts carried therebydescend, the table 23 acts through the part 60 on-the lever 58 tooperate the valve 49, motive fluid is admitted to the cylinder 12, andthe piston 14 is depressed, operating the ejector 16to push The sections29 of? the male die are. automatically withdrawn; to their initialposition by the ex pansion of the springs 21, and the separation of thebearing 20 and the table 23 thereby, by which the toggles 34 are causedto retract the sections. Y

' Having described my invention, I claim "1. In a box pressing machine,the combi similar cross-section and adapted to press a box therein, saidmale form having relatively movable angular sections and means forexpanding saidsections simultaneous approximatelyin the directions ofthe diagonal of said forms fwhile, permitting their universal movementfor adjustment to the material.

' 3. In a box pressingemachine, a stationary female form openhatitsbottom, an automatically acting ejector adapted to reciprocate in saidform, and a vertically reciproeating male form adapted to enter saidfemale form and press a box upwardly against said ejector, said maleform having sections adapted to move transversely to the verticalmovement thereof and means for effecting the transverse movement indifferential relation to the vertical movement.

4. In a'box pressing machine, the combination with a female form havingangularly disposed internal surfaces, of a male form having a head andrelatively movable sections each provided with angularly disposedsurfaces substantially parallel to surfaces aforesaid, means forreciprocating said male form and means for reciprocating said sectionsso as to move said surfaces of each section simultaneously towardrespective surfaces of said female form.

5. In a box pressing machine, the combination with a female form and anejector adapted to reciprocate in said form, of a sectional male formadapted for coacting with said female form to press a box therein andmechanism for entering said male form in said female form and thereafterexpanding the sections of said male form.

6. In a box pressing machine, the combination with a female form andfluid pressure mechanism for ejecting a box from said form. of asectional male form adapted for coacting with said female form to pressa box therein, fluid pressure mechanism for thrusting said male forminto said female form and differentially acting mechanism operated bysaid fluid pressure mechanism second named for subsequently expandingthe sections of said male form in said female form. 1

7. In a box pressing machine, the combination with a female form, of acoacting male form having a head and sect-ions movable relatively tosaid head, a reciprocating member, and toggle mechanisms connecting saidmember with said sections to effect their movement.

8. In a box pressing machine, the combination with a female form, of areciprocating table, a male form having a head fixed to said table andsections movable relatively to said head on said table, mechanism forreciprocating said table and said male die and differentially actingmechanism for reciprocating said sections relatively to said head andtable. I

9. In a box pressing machine, the combination with a. female form, of amale form having laterally movable sections, a reciprocarting device forcarrying said sections, a reciprocating rod, means whereby said rodreciprocates said device and is movable relatively thereto, and meanswhereby the movement of said rod relatively to said device reciprocatessaid sections.

10. In a box pressing machine, the combination, with a female form, of areciproeating male form having laterally movable sections, areciprocating rod, mechanism comprising one or more springs for carryingsaid male form to the approximate limit of its movement in said femaleform, and mechanism operated by said rod on the compression of saidsprings for expanding said sections.

11. In a box pressing machine, the combination with a stationary femaleform, of a male form having a head and sections movable relativelythereto, means for reciprocat ing said male form, and differentiallyacting means for reciprocating said sections and permitting theirautomatic adjustment relatively to an article pressed thereby in saidfemale form.

12. In a box pressing machine, a form having a head and sections movablerelatively to said head, in combination with a reciproeating rod, a yokecarried by said rod and movable relatively thereto, and toggle linkspivotally connected to said yoke and to said sections respectively.

13. In a box pressing machine, a form having a head and reciprocatingsections movable relatively thereto in angular relation, in combinationwith mechanism for reciprocating said sections, said mechanismcomprising oscillatory members permitting said sections to movelaterally relatively to their reciprocating movements.

14. In a box pressing machine, the combination with a base having acylinder fixed thereto, rods fixed to said base, a head fixed to saidrods and a female form fixed to said head, of a piston adapted toreciprocate in said cylinder, a piston rod provided with a bearingreciprocated by said piston, one or more springs carried by saidbearing, a table connected by said spring or springs with and movablerelatively to said bearing, guiding means movable on said rods andflexibly connected with said table, a male form having expansiblereciprocating sections carried by said table, and means whereby saidpiston rod reciprocates said sections.

, 15. In a box pressing machine, the combination with a female form, anejector therein, and fluid pressure mechanism comprising a valve foroperating said ejector, of a reciprocating male form and means movablewith said male form for operating said valve and effecting the operationof said ejector.

In testimony whereof I have hereunto set my name this 6th day of May,1921.

MATHIAS R. KONDOLF.

